Cutting or welding blowpipe.



1. a. REYBURN.

" CUTTING 0R WELDING BLOWPIPE.

APPLICATION FHTEDy DEC. 29, i915.

Patented May 2l, 1918.

ar suitable guide 65 in the head and be brought into engagement with an axial valve seat or gas passage in the tip and regulate the supply of oxygen to the cutting jet therein'. This valve may be readilyoperated y forming an angular operating slot or inelined socket 32 therein with which the anguv-lar end of a-n actuator rod 3 may actuator rod out through oaYsuitable stutling l blow-pipe and a thumb piece such 25 i inforced end 13 the cutting jet is boX 6, and v'packing 7 in the end of the connector member and threading a nut such as 18 on the end of this rod and this nut may be formed with an annular recess 19 with which the ke or slot 20 in the end 16 of a suitable actuator v.bar.10 may coperate. As indicated this bar .may be conveniently brought through a hole or guideway in the connector member so that its forward cnd is located between the handle 14and"'stem 1 of the be secured to this actuator bar siredl Way as by tween the thumb in any dea. threaded connection bepiece and a doubled or reof the actuator bar, for inway the thumb piece which stance. In this is always in convenient reach of the operator may be moved longitudinallyo the slot 11 and thus eii'ect the desiredlongitudinal movement of the actuator rod and instantly open 'or close the shut-oli" Valve undesirable ignition in the blowpipe passages.

The cutting tip 40 shown in Fig. 1 may as indicated be' formed with an axial cutting passage 39-having`a reduced end forming the cutting discharge 'conduit 58 from which projected against the work.

ne orrmore heating jet discharge conduits 44 may be arranged adjacent this cuttin jet within the end 43 of the tip which as indicated may be screwed to the connecting shell 45 having a similar screw joint 41 with the inner end of the tip. In this way anannular heating feed chamber or passage 42 is formed inthe tip communicating;r with each of the inclined heating jet discharge conduits 44 and supplying them Awith a combustible mix-v ture of gases which may bc ied to this chamber in any desired way as through the injector passage 38 communicating with the inject-or cham er 36 adjacent the inner und oi" the tip which is iii communication witl the -acet lene assafre 46inthchead communifat ing with the annular passage or conduit hetween the steinA 1 and gas tube 2. The oxygen for these heating jets may be supplied through the injector nozzle 37 inthe tip and communicating with the oxygcn'supply so that this jet oi oxygen is directed down the injector passage 38 and mixes with the acetylene cr other inflammable gas drawn vided with as 12 may.

with the tip so that one or 31 in case of Y bers mounted onr the into 'the same by this injector action. In this Way the cutting jet is substantially surrounded `by these inwardly directed'heating replaced by a welding or heating tip such as l shown in Fig. 4. This tip 50,-niay be proa similar flange the securing collar 56 coperates to force its fiat junction surface 63 into engagement with the reduced area junction'surface 62 on the headand thus make tight joint between these parts. The simboliI valve 31 may as indicated coperatie directly with a valve seat formed in this tip which may have; a

u nozzle passage 59 formed therein whiclri's directed in line with the injector passa e 51 in the tip. In

this way acetylene is ylene feed passages 48 tip which communicate through which the acet Iene is supplie -and mixture of these gases is thus insured before they are delivered fromthe dischar e conduit 57 in the replaceable tip end As indicated this tip with a screw thread rawn' into the acetwith the passa end may be r ided by which itpngi be joined with the tip 50 or with an interposed extension member or tip body 53 having the junction thread 54 formed thereon. This tip body may have a similar more of these parts may be renewed or replaced at any time and one or more such extension memtip to suit the particulai' conditions of Work. This invention has been described in connection with a number of illustrative embodiments, forms, arrangements, proportions, parts, materials and devices, to the details of which disclosure the invention is not of course to be limited, since what is claimed as new and what is desired to be' secured by Letters .Patent is set forth in the appended claims:

1. A cuttin or welding blowpipe comprising a tubu ar stem and a connected head extending at an oblique angle to said stem, and regulating valves to regulate the supply of oxygen and heating gas to said head a tip'norinally coperating with said hea and having a central 'sluit oli' valve seat, .a threaded securing collar securing said tip to said head and' engaging a` projecting [lange on said tip, a reduced area metallic junction surface between said head and the en'd of said tip to form a tight joint there` with, a projecting protectingledge around thel junction surface of said tip, a gas passage communicating with said t'ip for the admission of oxygen, a shut-oli' valve mounted in a recess in said head to control said gas passage and formed with an nclincd actuating socket, un actuator od in this part of the. 46.

64 with which l in the .oxygen nozzle 35 l screw joint 52 I Leconte said shutoff valve.

2. A cutting or Welding blowpipe comprising a tubular stein and a connected head extending at an angle to said stem, and regulating valves to regulate the' supply ci' oxygen and heating' gas to said head, a tip normally cooperating with said head and having a central shut oil valve Seat, a Securing collar securing said tip to said head and engaging a projecting flange on said tip, a reduced area metallic junction surface loetween said head and the end of said tip to form a tight'joint.therewith, a gas passage coinlninricating,l with Said tip, a shut oli valve mounted in a recess in said head to control said gas passage.

3. A cutting or Welding hlowpipe com pricing a head, a reduced area metallic junction surface formed in said head, a replaceable tip having a substantially flat junction surface to he forced into cooperation with said reduced area junction surface and having a projecting protecting ledge around 'its junction Surface, Said tip being formed with nozzle passages to lorin heating or cutting' jets and a replaceable tip end removably eccured to said tip and having a tip socket to he forced into tight engagement with said tip.

a. A cutting' or Welding blowpipe coinprieing a handle and a connected head, a reduced area metallic junction surface formed in said head, a replaceable tip having a substantially fiat junction surface to be forced into coperation with. said reduced area junction surface and having a projecting protecting ledge around its junction surfac-c, said tip being formed with nozzle passages to forni heating or cuttingr jets.

5. A cutting or welding hlowpipe comn prising a head. member, a replaceable tip forming another member removably coperating With said head member, a reduced area metallic junction surface formed on one of said members to be forced into tight contact with the junction surface on the other inember, said tip having a projecting protecting ledge around its dat junction surface and being formed with a nozzle passage for heatn ing or cutting; jets, and with a centrally lo'- cated valve seat adjacent said head member and acut-off valve in said head member co-4 operating with said Valve seat.

6. it cutting or Welding blowjpipe comprising a head member, a replaceable tip forming another member removably coperating with said head member, a reduced area metallic junction surface formed on one ol2 said members to he forced into tight coi'itact with the junction surface on the other member, said tip having a projectingprotecting ledge adjacent its junction surface and hein formed with a nozzle passage for heating or cutting jets.

JOHN R. REYBURN.

Witnesses:

JOHN P. RAMSEY, WM. C. E'rmnsnann. 

